Here's a surprise: Eating disorders don't just affect teenagers. A new report from the American Academy of Pediatrics shows a new age group battling anorexia and bulimia in record numbers: elementary school kids. In fact, hospitalizations for girls and boys under 12 with eating disorders has skyrocketed 119-percent, and doctors say it may be because the campaign on obesity is backfiring. It's no secret that childhood obesity is a huge problem in North America. One in three kids are obese or seriously overweight. So, there's been an unprecedented movement with teachers and doctors educating young children - starting in pre-school - about weight and dieting, which means kids as young as five are hyper-aware of food and counting calories. Since they're so young, a lot of kids don't understand what eating disorders are, so they have no clue that they have one. The same goes for parents - they just think their kid is going through a weird food or exercise phase, and tragically, many of these child sufferers go untreated while anorexia or bulimia destroys their growing bodies. Having it at such a young age puts them at risk for stunted growth, organ damage, and death. This new report encourages pediatricians to start screening kids for eating disorders at their annual check-up - just as they screen for diseases like cancer. Until your kid's next appointment, here are the top signs your child may have an eating disorder: * They exercise excessively. They're moving from the moment they get home until they go to bed. Even when they're sitting at the kitchen table, they're shaking their knees rapidly up and down to burn off extra calories. * They go from not caring about what they eat to obsessing over every food item in the house. If you'd like to go further, check out NationalEatingDisorders.org.